diff --git a/src/View/BlockViewBuilder.php b/src/View/BlockViewBuilder.php
index 379903d..957b396 100644
--- a/src/View/BlockViewBuilder.php
+++ b/src/View/BlockViewBuilder.php
@@ -151,9 +151,12 @@ class BlockViewBuilder {
       ->applyTo($build);
 
     if (!isset($build['#cache']['keys'])) {
-      $configuration['_wrapper'] = $wrapper;
-      $configuration_hash = hash('sha256', serialize($configuration));
-      $build['#cache']['keys'] = ['twig_tweak_block', $id, $configuration_hash];
+      $build['#cache']['keys'] = [
+        'twig_tweak_block',
+        $id,
+        '[configuration]=' . hash('sha256', serialize($configuration)),
+        '[wrapper]=' . (int) $wrapper,
+      ];
     }
 
     return $build;
diff --git a/tests/src/Kernel/BlockViewBuilderTest.php b/tests/src/Kernel/BlockViewBuilderTest.php
index af30454..def9c13 100644
--- a/tests/src/Kernel/BlockViewBuilderTest.php
+++ b/tests/src/Kernel/BlockViewBuilderTest.php
@@ -65,7 +65,8 @@ final class BlockViewBuilderTest extends KernelTestBase {
         'keys' => [
           'twig_tweak_block',
           'twig_tweak_test_foo',
-          '9ef25a303eb97a01011ea20c50e731590c000f8bc6196241020fc118cce68180',
+          '[configuration]=04c46ea912d2866a3a36c67326da1ef38f1c93cc822d6c45e1639f3decdebbdc',
+          '[wrapper]=1',
         ],
       ],
     ];
@@ -77,7 +78,12 @@ final class BlockViewBuilderTest extends KernelTestBase {
     $expected_build['content']['#markup'] = 'Bar';
     $expected_build['#configuration']['label'] = 'Example';
     $expected_build['#configuration']['content'] = 'Bar';
-    $expected_build['#cache']['keys'][2] = '96b740819b50d416148484351f52de1c894b63cf59af255b502c9399c73b8557';
+    $expected_build['#cache']['keys'] = [
+      'twig_tweak_block',
+      'twig_tweak_test_foo',
+      '[configuration]=373b0811b355fa153ac8934c897a021697ff6e848f00b85e711d36212b77a958',
+      '[wrapper]=1',
+    ];
     self::assertSame($expected_build, $build);
     self::assertSame('<div><h2>Example</h2>Bar</div>', $this->renderPlain($build));
 
@@ -98,7 +104,8 @@ final class BlockViewBuilderTest extends KernelTestBase {
         'keys' => [
           'twig_tweak_block',
           'twig_tweak_test_foo',
-          '82b254ef229c95f336386ee50454e0cc56705e97c1991d68fe9afdb1fb401f3a',
+          '[configuration]=04c46ea912d2866a3a36c67326da1ef38f1c93cc822d6c45e1639f3decdebbdc',
+          '[wrapper]=0',
         ],
       ],
     ];
@@ -116,7 +123,8 @@ final class BlockViewBuilderTest extends KernelTestBase {
         'keys' => [
           'twig_tweak_block',
           'twig_tweak_test_foo',
-          '9ef25a303eb97a01011ea20c50e731590c000f8bc6196241020fc118cce68180',
+          '[configuration]=04c46ea912d2866a3a36c67326da1ef38f1c93cc822d6c45e1639f3decdebbdc',
+          '[wrapper]=1',
         ],
       ],
     ];